Magnifying glass for radio dials



1 J. B. WEINTRAUB MAGNIFYING GLASS FOR RADIO DIALS Patented Dec; 22, 1931 JACOB B. WEINTRAUB,

on irrrmvir;"Fnonnm 1r Application filed May 28, V

This invention relates to an improved magnifying glass for radio dials. V v

One object of the invention is to providea device of this character which will effectual- 5 ly magnify the numerals on the dial face so that dial readings may be more readily taken;

Another object ofthe invention is to provide a magnifying glass employing clampf ing means for maintaining the. glass in operative position. I

V A further objectof the invention is to provide a magnifying glass which will keep dust from collecting upon the dial face. I

ther and incidental objects of the invention not mentioned in the foregoing will appear during the course of the" following description.

In the drawings: c Figure 1 is a fragmentary vertical sectional view showing the device in operative positlOIl; V i

Figure 2 is a front elevation of the device. Figure 3 is a horizontal sectional View on theline 33 of Figure 1, looking in the direction indicated by the arrows;

Referring now to the drawings, the numeral 1 indicates a portion of a radio panel. and associated with the panel is a dial as-' sembly including a dial 2, a knob 3, a shaft 4, a pulley fi on the shaft to engage the dial, and an escutcheon plate 6; By turning the knob 3, the dial 2, of course, may be rotated for tuning the radio set to select the sending station desired.

As best seen in Fi the escutcheon plate is pered sight opening 7 which is surrounded by the rearwardly converging walls of a downwardly inclined substantially rectangure 1 of the drawings," provided with a ta-.

'gular sight tube 8 which extends more or less close to the beveled outer margin of the dial 2. It is to be understood, of course, that a drum type dial may be employed in lieu of the illustrated disc type, if preferred.

The improved magnifying glass forming the subject matter of the present invention comprises a bezel or frame 9 which is preferably formed of pressedmetal and is channel shaped in cross section. As best seen in Fig. 3 of the drawings, the frame is provided tapere -side flange 0 {top and 3 Tightly clamped n gnargin 10f which lies n thes channel of saidi sight tube -8 an 1930."Seria1No;.456,621 .1]

d'edges 9'. Formed on the inner f the frame midway betweenthe. bottom thereof are oppositely disposedresilient'spring'catches 10 which convergerearwardlyand terminate presented 'hooks ll. i theF-framel) isla'relafyin'g lens or pane; 12, the

timely thick magni frame a -In1use,-the catches 110 2116 inserted in the d advanced rearwardly until the 'frame 9. wedges in the mouth of. said tube when the catches 10 will'spring laterallyfto engage the hooks 11 with the rear edges of the sidewalls of the tube. T;h11s,the frame will coact with the walls of the tube forlimiting the frame against further inward movement 'within the tube, whilethe hooks will coact with the side walls of the tube for holding the frame in its wedged position within the. mouth of the tube so that all looseness and vibration will be overcome. Furthermore, the frame and lens will tightly close the mouth of the'tube for excluding dust and- 7 other particles from the dial face; As will be observed, the catches lO'seat flat throughout their length against the side walls of the sight tube so as to obstruct the vision through said tube as little as possible and these catches yieldably hug said side walls so as to forestall possible vibration of said catches.

What is claimed is: j r i 1. A device of the class described including a transpar in converging walls of the sight openingof, 1 the escutcheon plate of a radio set, and means to operatively coact with saidplate for securing the transparency in position. f

2. A device of the class described including a lens, a frame mounting the lens andhaving tapered edges to wedge in converging walls of the sight opening of the escutcheon plate of a radio set, and 'means for securing the frame and lens in said opening.

3. A device of the class described including 7 a lens, and a frame mountingv the lens and havingtapered edges to wedge in converging wallsdefining the mouth of the sight tube of an escutcheon plate of a radio set, said frame L in oppositely "55 ency having tapered edges to wedge -85 I 7 1,837,63fi

having spring catches to engage the tube for securing the frame and lens in position.

4. The combination with the dial assembly of a radio set including an escutcheon plate 5 having a sight opening, a sight tube surrounding said opening, and a dial visible through said opening and tube, of a lens mounted in said "opening at theimoutha of th tube, and means engaging the inner end 0 said tube and securing the lens in position.

7 5'. The combiation with a di'a-l assembly of:

a radio set including an escutcheon platehay- Y ing a sight opening, a sight tube surrounding a said opening,and a'dial Visible through said 15 opening and tube, of a lens, a frame mounting the lens. and disposed in said .opening the iramebeing wedged in'lthe mouth of the't-uhe, and spring catches carried bytherfname and. r provided withehooks engaging the inner-end j @51 edge soi -the tube for secur ng the "framewin its wedge position'in the mouth-oi thetube.

$6,. The combination; with .a dial assembly havingan ,eseutcheon plate,- prioviided with; a

sight opening and a,. sight tube-surrounding i 3 said sight opening, said sight tube beingpnowided withiconverglng;Walls,ro a fname hav- 'ing tapered edges: adaptedto normally Wedge in the month at the sight tube and preventing inwand tnavel v0t said; frame, .and:- a lensican ried byvthe frame; i V In testimony whereof I aflix mysignature. JACOB; 13.. WEINTR'AUBL, EL. 51.] 

